Alert archive / New Jersey / Red Flag Warnings in 2011
Red Flag Warning 4, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this red flag warning at Mar 28, 2011, 4:35 AM EDT for 13 counties in New Jersey; Delaware County, Philadelphia County, Pennsylvania. It took effect at Mar 28, 2011, 1:00 PM EDT. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Mar 28, 2011, 4:35 AM EDT (08:35 UTC)
- In effect from
- Mar 28, 2011, 1:00 PM EDT
- Expired
- Mar 28, 2011, 6:00 PM EDT
- In force
- 5 hr
- Issued by
- NWS Philadelphia/Mount Holly
Counties Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Ocean County, NJ, Salem County, NJ, Somerset County, NJ, Delaware County, PA, Philadelphia County, PA
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 8.6 hours before the alert went out and 196 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2751 m above ground
- 0-6 km bulk shear
- 72 kt
- 0-1 km storm-relative helicity
- 27 m²/s²
- 0-3 km storm-relative helicity
- 74 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
834 WWUS81 KPHI 280835 RFWPHI URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 435 AM EDT MON MAR 28 2011 NJZ009-010-012>027-PAZ067>071-281700- /O.NEW.KPHI.FW.W.0004.110328T1700Z-110328T2200Z/ HUNTERDON-SOMERSET-MIDDLESEX-WESTERN MONMOUTH-EASTERN MONMOUTH- MERCER-SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-OCEAN- CUMBERLAND-ATLANTIC-CAPE MAY-ATLANTIC COASTAL CAPE MAY- COASTAL ATLANTIC-COASTAL OCEAN-SOUTHEASTERN BURLINGTON-CHESTER- MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA- 435 AM EDT MON MAR 28 2011 ...RED FLAG WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 6 PM EDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 1 PM THIS AFTERNOON TO 6 PM EDT THIS EVENING. * LOCATIONS...MOST OF THE NEW JERSEY EXCEPT THE NORTHWEST CORNER AS WELL AS MUCH OF SOUTHEASTERN PENNSYLVANIA NEAR THE DELAWARE RIVER. * NORTHWEST WIND GUSTS ARE FORECAST TO REACH 20 MPH FOR SEVERAL HOURS THIS AFTERNOON...COINCIDENT WITH RELATIVE HUMIDITY BELOW 30 PERCENT AND 10 HOUR LAG TIME FUELS WELL BELOW 10 PERCENT. * THIS COMBINATION OF FACTORS WOULD LEAD TO A MUCH MORE RAPID RATE OF SPREAD OF ANY FINE FUEL FIRES THAT MAY DEVELOP. * CONFIDENCE...THE MOST UNCERTAIN ASPECT OF THIS WARNING IS THE OCCURRENCE/PERSISTENCE OF GUSTS AT OR JUST ABOVE 20 MPH THIS AFTERNOON. THERE IS A SMALL CHANCE THIS WARNING MAY NEED TO BE EXPANDED IN EASTERN PENNSYLVANIA DURING OUR LATE MORNING REVIEW OR EVEN DOWN INTO NORTHERN DELAWARE. * OUTLOOK...TUESDAY AFTERNOON SHOULD SEE A REPEAT OF LOW HUMIDITY... CONTINUED VERY DRY FINE FUELS AND GUSTY WINDS AROUND 20 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ DRAG
2 follow-up statements
735 WWUS81 KPHI 281431 RFWPHI URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 1031 AM EDT MON MAR 28 2011 NJZ009-010-012>027-PAZ067>071-282200- /O.CON.KPHI.FW.W.0004.110328T1700Z-110328T2200Z/ HUNTERDON-SOMERSET-MIDDLESEX-WESTERN MONMOUTH-EASTERN MONMOUTH- MERCER-SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-OCEAN- CUMBERLAND-ATLANTIC-CAPE MAY-ATLANTIC COASTAL CAPE MAY- COASTAL ATLANTIC-COASTAL OCEAN-SOUTHEASTERN BURLINGTON-CHESTER- MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA- 1031 AM EDT MON MAR 28 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM EDT THIS EVENING... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM EDT THIS EVENING. * LOCATIONS...MOST OF THE NEW JERSEY EXCEPT THE NORTHWEST CORNER AS WELL AS MUCH OF SOUTHEASTERN PENNSYLVANIA NEAR THE DELAWARE RIVER. * NORTHWEST WIND GUSTS ARE FORECAST TO REACH 20 MPH FOR SEVERAL HOURS THIS AFTERNOON...COINCIDENT WITH RELATIVE HUMIDITY BELOW 30 PERCENT AND 10 HOUR LAG TIME FUELS WELL BELOW 10 PERCENT. * THIS COMBINATION OF FACTORS WOULD LEAD TO A MUCH MORE RAPID RATE OF SPREAD OF ANY FINE FUEL FIRES THAT MAY DEVELOP. * OUTLOOK...TUESDAY AFTERNOON SHOULD SEE A REPEAT OF LOW HUMIDITY... CONTINUED VERY DRY FINE FUELS AND GUSTY WINDS AROUND 20 MPH. A FIRE WEATHER WATCH MAY ISSUED LATER THIS AFTERNOON. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND ABOVE FREEZING TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$
522 WWUS81 KPHI 282202 RFWPHI URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 602 PM EDT MON MAR 28 2011 NJZ009-010-012>027-PAZ067>071-291015- /O.EXP.KPHI.FW.W.0004.000000T0000Z-110328T2200Z/ /O.NEW.KPHI.FW.A.0002.110329T1600Z-110329T2200Z/ HUNTERDON-SOMERSET-MIDDLESEX-WESTERN MONMOUTH-EASTERN MONMOUTH- MERCER-SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-OCEAN- CUMBERLAND-ATLANTIC-CAPE MAY-ATLANTIC COASTAL CAPE MAY- COASTAL ATLANTIC-COASTAL OCEAN-SOUTHEASTERN BURLINGTON-CHESTER- MONTGOMERY-BUCKS-DELAWARE-PHILADELPHIA- 602 PM EDT MON MAR 28 2011 ...FIRE WEATHER WATCH IN EFFECT TUESDAY AFTERNOON... ...RED FLAG WARNING HAS EXPIRED... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A FIRE WEATHER WATCH...WHICH IS IN EFFECT TUESDAY AFTERNOON. THE RED FLAG WARNING IS NO LONGER IN EFFECT. * LOCATIONS...MOST OF THE NEW JERSEY EXCEPT THE NORTHWEST CORNER AS WELL AS MUCH OF SOUTHEASTERN PENNSYLVANIA NEAR THE DELAWARE RIVER. * NORTHWEST WIND GUSTS ARE FORECAST TO REACH 20 MPH FOR SEVERAL HOURS TUESDAY AFTERNOON...COINCIDENT WITH RELATIVE HUMIDITY BELOW 30 PERCENT AND 10 HOUR LAG TIME FUELS WELL BELOW 10 PERCENT. * THIS COMBINATION OF FACTORS WOULD LEAD TO A MORE RAPID RATE OF SPREAD OF ANY FINE FUEL FIRES THAT MAY DEVELOP. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE RED FLAG WARNINGS. && $$
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 27, 9:37 PM EDT | Small Craft Advisory | PHI | 18 hr | |
| Mar 28, 6:02 PM EDT | Fire Weather Watch | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 7 more | 10 hr |
Nearby
Red Flag Warnings in New Jersey, 2011Red Flag Warnings in Pennsylvania, 2011Every red flag warning in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.